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Trojan.Siggen19.18723

Added to the Dr.Web virus database: 2022-12-06

Virus description added:

Technical Information

Malicious functions
To complicate detection of its presence in the operating system,
blocks execution of the following system utilities:
  • Windows Task Manager (Taskmgr)
blocks the following features:
  • System Restore (SR)
  • User Account Control (UAC)
modifies the following system settings:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoRun' = '00000001'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'StartMenuLogOff' = '00000001'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoClose' = '00000001'
deletes volume shadow copies.
Injects code into
the following system processes:
  • <SYSTEM32>\vds.exe
Modifies file system
Creates the following files
  • %ALLUSERSPROFILE%\service\service.surt
  • %ALLUSERSPROFILE%\service\bus.surt
  • %ALLUSERSPROFILE%\service\reg.surt
  • %ALLUSERSPROFILE%\service\id_data.surt
  • %ALLUSERSPROFILE%\service\publicdata_kueiwhur71es79.surt
  • %ALLUSERSPROFILE%\service\privatedata_kueiwhur71es79.surt
  • %ALLUSERSPROFILE%\service\surtr_readme.hta
  • %ALLUSERSPROFILE%\service\surtr_readme.txt
  • %ALLUSERSPROFILE%\service\surtr.exe
  • %TEMP%\service\surtr.exe
  • %TEMP%\service\publicdata_kueiwhur71es79.surt
Network activity
UDP
  • DNS ASK ip##pi.com
Miscellaneous
Creates and executes the following
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=C:\ /on=C:\ /maxsize=401MB' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=S:\ /on=S:\ /maxsize=401MB' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=R:\ /on=R:\ /maxsize=unbounded' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=R:\ /on=R:\ /maxsize=401MB' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v NoBackupToDisk /t REG_DWORD /d 1 /f' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=Q:\ /on=Q:\ /maxsize=unbounded' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v OnlySystemBackup /t REG_DWORD /d 1 /f' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=Q:\ /on=Q:\ /maxsize=401MB' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=P:\ /on=P:\ /maxsize=unbounded' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableSystemBackupUI /t REG_DWORD /d 1 /f' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=P:\ /on=P:\ /maxsize=401MB' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupUI /t REG_DWORD /d 1 /f' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=O:\ /on=O:\ /maxsize=unbounded' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableRestoreUI /t REG_DWORD /d 1 /f' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=O:\ /on=O:\ /maxsize=401MB' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupLauncher /t REG_DWORD /d 1 /f' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=N:\ /on=N:\ /maxsize=unbounded' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupToOptical /t REG_DWORD /d 1 /f' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v NoBackupToNetwork /t REG_DWORD /d 1 /f' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=S:\ /on=S:\ /maxsize=unbounded' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=B:\ /on=B:\ /maxsize=unbounded' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v NoRunNowBackup /t REG_DWORD /d 1 /f' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=A:\ /on=A:\ /maxsize=unbounded' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=A:\ /on=A:\ /maxsize=401MB' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=Z:\ /on=Z:\ /maxsize=unbounded' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=Y:\ /on=Y:\ /maxsize=unbounded' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=Z:\ /on=Z:\ /maxsize=401MB' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=Y:\ /on=Y:\ /maxsize=401MB' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=X:\ /on=X:\ /maxsize=unbounded' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=X:\ /on=X:\ /maxsize=401MB' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=W:\ /on=W:\ /maxsize=unbounded' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=V:\ /on=V:\ /maxsize=unbounded' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=W:\ /on=W:\ /maxsize=401MB' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=V:\ /on=V:\ /maxsize=401MB' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=U:\ /on=U:\ /maxsize=unbounded' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=U:\ /on=U:\ /maxsize=401MB' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=T:\ /on=T:\ /maxsize=unbounded' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\WMI\Autologger\EventLog-System\{9580d7dd-0379-4658-9870-d5be7d52d6de} /v Enable /t REG_DWORD /d 0 /f' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=T:\ /on=T:\ /maxsize=401MB' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=N:\ /on=N:\ /maxsize=401MB' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v NoBackupToOptical /t REG_DWORD /d 1 /f' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupToNetwork /t REG_DWORD /d 1 /f' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=H:\ /on=H:\ /maxsize=unbounded' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=G:\ /on=G:\ /maxsize=unbounded' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=G:\ /on=G:\ /maxsize=401MB' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=<Drive name for removable media>:\ /on=<Drive name for removable media>:\ /maxsize=401MB' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c wbadmin.exe delete catalog -quiet' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\System /v AllowBlockingAppsAtShutdown /t REG_DWORD /d 1 /f' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLinkedConnections /t REG_DWORD /d 1 /f' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=D:\ /on=D:\ /maxsize=unbounded' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c bcdedit /set {default} bootstatuspolicy IgnoreAllFailures' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=<Drive name for removable media>:\ /on=<Drive name for removable media>:\ /maxsize=unbounded' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c schtasks.exe /Change /TN "\Microsoft\Windows\SystemRestore\SR" /disable' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c fsutil.exe usn deletejournal /D C:' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c bcdedit /set {default} recoveryenabled No' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=D:\ /on=D:\ /maxsize=401MB' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=C:\ /on=C:\ /maxsize=unbounded' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin.exe Delete Shadows /all /quiet' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=H:\ /on=H:\ /maxsize=401MB' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v StartMenuLogOff /t REG_DWORD /d 1 /f' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=M:\ /on=M:\ /maxsize=unbounded' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=I:\ /on=I:\ /maxsize=401MB' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c reg add "HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\SystemRestore" /v DisableSR /t REG_DWORD /d 1 /f' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=M:\ /on=M:\ /maxsize=401MB' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c reg add "HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\SystemRestore" /v DisableConfig /t REG_DWORD /d 1 /f' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WinRE /v DisableSetup /t REG_DWORD /d 1 /f' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=L:\ /on=L:\ /maxsize=unbounded' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=L:\ /on=L:\ /maxsize=401MB' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\NonEnum /v {645FF040-5081-101B-9F08-00AA002F954E} /t REG_DWORD /d 1 /f' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=K:\ /on=K:\ /maxsize=unbounded' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=K:\ /on=K:\ /maxsize=401MB' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoClose /t REG_DWORD /d 1 /f' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=J:\ /on=J:\ /maxsize=unbounded' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v NoLogoff /t REG_DWORD /d 1 /f' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=J:\ /on=J:\ /maxsize=401MB' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableLockWorkstation /t REG_DWORD /d 1 /f' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableChangePassword /t REG_DWORD /d 1 /f' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=I:\ /on=I:\ /maxsize=unbounded' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoRun /t REG_DWORD /d 1 /f' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupToDisk /t REG_DWORD /d 1 /f' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=B:\ /on=B:\ /maxsize=401MB' (with hidden window)
Executes the following
  • '%WINDIR%\syswow64\cmd.exe' /c mkdir %ALLUSERSPROFILE%\Service
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=R:\ /on=R:\ /maxsize=unbounded
  • '<SYSTEM32>\reg.exe' add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\NonEnum /v {645FF040-5081-101B-9F08-00AA002F954E} /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=S:\ /on=S:\ /maxsize=401MB
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v NoBackupToNetwork /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\vssadmin.exe' resize shadowstorage /for=K:\ /on=K:\ /maxsize=unbounded
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v NoBackupToDisk /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=R:\ /on=R:\ /maxsize=401MB
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v NoBackupToOptical /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v NoRunNowBackup /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=T:\ /on=T:\ /maxsize=401MB
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\WMI\Autologger\EventLog-System\{9580d7dd-0379-4658-9870-d5be7d52d6de} /v Enable /t REG_DWORD /d 0 /f
  • '%WINDIR%\syswow64\cmd.exe' /c copy "%ALLUSERSPROFILE%\Microsoft\Windows\Start Menu\Programs\StartUp\SURTR_README.hta" "%appdata%\Microsoft\Windows\Start Menu\Programs\Startup\SURTR_README.hta"
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=T:\ /on=T:\ /maxsize=unbounded
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=S:\ /on=S:\ /maxsize=unbounded
  • '<SYSTEM32>\vssadmin.exe' resize shadowstorage /for=L:\ /on=L:\ /maxsize=unbounded
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=Q:\ /on=Q:\ /maxsize=unbounded
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v OnlySystemBackup /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\vssadmin.exe' resize shadowstorage /for=K:\ /on=K:\ /maxsize=401MB
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableRestoreUI /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\wbengine.exe'
  • '<SYSTEM32>\vssadmin.exe' resize shadowstorage /for=J:\ /on=J:\ /maxsize=unbounded
  • '<SYSTEM32>\vds.exe'
  • '<SYSTEM32>\reg.exe' add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoClose /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=O:\ /on=O:\ /maxsize=unbounded
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=O:\ /on=O:\ /maxsize=401MB
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupUI /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=P:\ /on=P:\ /maxsize=401MB
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableSystemBackupUI /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WinRE /v DisableSetup /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=P:\ /on=P:\ /maxsize=unbounded
  • '<SYSTEM32>\reg.exe' add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v NoLogoff /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=Q:\ /on=Q:\ /maxsize=401MB
  • '<SYSTEM32>\vssadmin.exe' resize shadowstorage /for=L:\ /on=L:\ /maxsize=401MB
  • '<SYSTEM32>\vssadmin.exe' resize shadowstorage /for=N:\ /on=N:\ /maxsize=unbounded
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=U:\ /on=U:\ /maxsize=401MB
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=U:\ /on=U:\ /maxsize=unbounded
  • '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupToDisk /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\cmd.exe' /c copy "%ALLUSERSPROFILE%\Service\Surtr.exe" "%TEMP%\Service\Surtr.exe"
  • '%WINDIR%\syswow64\cmd.exe' /c copy "%ALLUSERSPROFILE%\Service\PublicData_kueiwhur71es79.surt" "%TEMP%\Service\PublicData_kueiwhur71es79.surt"
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=A:\ /on=A:\ /maxsize=unbounded
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=B:\ /on=B:\ /maxsize=unbounded
  • '<SYSTEM32>\vssadmin.exe' resize shadowstorage /for=M:\ /on=M:\ /maxsize=401MB
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=B:\ /on=B:\ /maxsize=401MB
  • '<SYSTEM32>\vssadmin.exe' resize shadowstorage /for=S:\ /on=S:\ /maxsize=unbounded
  • '<SYSTEM32>\vssadmin.exe' resize shadowstorage /for=V:\ /on=V:\ /maxsize=unbounded
  • '<SYSTEM32>\vssadmin.exe' resize shadowstorage /for=U:\ /on=U:\ /maxsize=unbounded
  • '<SYSTEM32>\reg.exe' add "HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\SystemRestore" /v DisableConfig /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\cmd.exe' /c copy "%ALLUSERSPROFILE%\Service\PrivateData_kueiwhur71es79.surt" "%TEMP%\Service\PrivateData_kueiwhur71es79.surt"
  • '<SYSTEM32>\vssadmin.exe' resize shadowstorage /for=T:\ /on=T:\ /maxsize=unbounded
  • '%WINDIR%\syswow64\cmd.exe' /c copy "%ALLUSERSPROFILE%\Service\ID_DATA.surt" "%TEMP%\Service\ID_DATA.surt"
  • '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Server /v NoBackupToDisk /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\cmd.exe' /c copy "%ALLUSERSPROFILE%\Service\SURTR_README.hta" "%TEMP%\Service\SURTR_README.hta"
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=A:\ /on=A:\ /maxsize=401MB
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=Y:\ /on=Y:\ /maxsize=unbounded
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=Z:\ /on=Z:\ /maxsize=unbounded
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=Z:\ /on=Z:\ /maxsize=401MB
  • '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableRestoreUI /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=V:\ /on=V:\ /maxsize=401MB
  • '<SYSTEM32>\vssadmin.exe' resize shadowstorage /for=R:\ /on=R:\ /maxsize=401MB
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=W:\ /on=W:\ /maxsize=401MB
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=V:\ /on=V:\ /maxsize=unbounded
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=W:\ /on=W:\ /maxsize=unbounded
  • '<SYSTEM32>\reg.exe' add "HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\SystemRestore" /v DisableSR /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupToNetwork /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupUI /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupLauncher /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=X:\ /on=X:\ /maxsize=401MB
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=X:\ /on=X:\ /maxsize=unbounded
  • '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupToOptical /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\cmd.exe' /c copy "%ALLUSERSPROFILE%\Microsoft\Windows\Start Menu\Programs\StartUp\SURTR_README.txt" "%appdata%\Microsoft\Windows\Start Menu\Programs\Startup\SURTR_README.txt"
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=Y:\ /on=Y:\ /maxsize=401MB
  • '%WINDIR%\syswow64\cmd.exe' /c copy "%ALLUSERSPROFILE%\Service\SURTR_README.txt" "%TEMP%\Service\SURTR_README.txt"
  • '<SYSTEM32>\vssadmin.exe' resize shadowstorage /for=J:\ /on=J:\ /maxsize=401MB
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupLauncher /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=N:\ /on=N:\ /maxsize=unbounded
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=G:\ /on=G:\ /maxsize=401MB
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=G:\ /on=G:\ /maxsize=unbounded
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=H:\ /on=H:\ /maxsize=401MB
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=H:\ /on=H:\ /maxsize=unbounded
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v StartMenuLogOff /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=<Drive name for removable media>:\ /on=<Drive name for removable media>:\ /maxsize=401MB
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=I:\ /on=I:\ /maxsize=401MB
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableChangePassword /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableLockWorkstation /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=J:\ /on=J:\ /maxsize=401MB
  • '<SYSTEM32>\vssadmin.exe' resize shadowstorage /for=C:\ /on=C:\ /maxsize=401MB
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v NoLogoff /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoRun /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=I:\ /on=I:\ /maxsize=unbounded
  • '<SYSTEM32>\cmd.exe' /c wbadmin.exe delete catalog -quiet
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\System /v AllowBlockingAppsAtShutdown /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
  • '%WINDIR%\syswow64\cmd.exe' /c chcp 437
  • '%WINDIR%\syswow64\chcp.com' 437
  • '%WINDIR%\syswow64\cmd.exe' /c mkdir "%TEMP%\Service"
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=C:\ /on=C:\ /maxsize=401MB
  • '<SYSTEM32>\cmd.exe' /c vssadmin.exe Delete Shadows /all /quiet
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=C:\ /on=C:\ /maxsize=unbounded
  • '%WINDIR%\syswow64\cmd.exe' /c @echo off
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=D:\ /on=D:\ /maxsize=401MB
  • '<SYSTEM32>\cmd.exe' /c fsutil.exe usn deletejournal /D C
  • '<SYSTEM32>\cmd.exe' /c schtasks.exe /Change /TN "\Microsoft\Windows\SystemRestore\SR" /disable
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=<Drive name for removable media>:\ /on=<Drive name for removable media>:\ /maxsize=unbounded
  • '<SYSTEM32>\cmd.exe' /c bcdedit /set {default} bootstatuspolicy IgnoreAllFailures
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=D:\ /on=D:\ /maxsize=unbounded
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLinkedConnections /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c bcdedit /set {default} recoveryenabled No
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=J:\ /on=J:\ /maxsize=unbounded
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoClose /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=K:\ /on=K:\ /maxsize=401MB
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=K:\ /on=K:\ /maxsize=unbounded
  • '<SYSTEM32>\vssadmin.exe' resize shadowstorage /for=C:\ /on=C:\ /maxsize=unbounded
  • '<SYSTEM32>\schtasks.exe' /Change /TN "\Microsoft\Windows\SystemRestore\SR" /disable
  • '<SYSTEM32>\reg.exe' add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoRun /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\vssadmin.exe' resize shadowstorage /for=G:\ /on=G:\ /maxsize=unbounded
  • '<SYSTEM32>\wbadmin.exe' delete catalog -quiet
  • '<SYSTEM32>\vssadmin.exe' resize shadowstorage /for=H:\ /on=H:\ /maxsize=unbounded
  • '<SYSTEM32>\reg.exe' add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupToNetwork /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=N:\ /on=N:\ /maxsize=401MB
  • '<SYSTEM32>\reg.exe' add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v StartMenuLogOff /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLinkedConnections /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\reg.exe' add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableChangePassword /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\vssadmin.exe' resize shadowstorage /for=H:\ /on=H:\ /maxsize=401MB
  • '<SYSTEM32>\bcdedit.exe' /set {default} bootstatuspolicy IgnoreAllFailures
  • '<SYSTEM32>\reg.exe' add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableLockWorkstation /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\fsutil.exe' usn deletejournal /D C
  • '<SYSTEM32>\vssadmin.exe' resize shadowstorage /for=D:\ /on=D:\ /maxsize=401MB
  • '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\System /v AllowBlockingAppsAtShutdown /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\vssadmin.exe' resize shadowstorage /for=<Drive name for removable media>:\ /on=<Drive name for removable media>:\ /maxsize=401MB
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\NonEnum /v {645FF040-5081-101B-9F08-00AA002F954E} /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=L:\ /on=L:\ /maxsize=401MB
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=L:\ /on=L:\ /maxsize=unbounded
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WinRE /v DisableSetup /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c reg add "HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\SystemRestore" /v DisableConfig /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=M:\ /on=M:\ /maxsize=401MB
  • '<SYSTEM32>\cmd.exe' /c reg add "HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\SystemRestore" /v DisableSR /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\vssadmin.exe' resize shadowstorage /for=G:\ /on=G:\ /maxsize=401MB
  • '<SYSTEM32>\vssadmin.exe' resize shadowstorage /for=I:\ /on=I:\ /maxsize=unbounded
  • '<SYSTEM32>\cmd.exe' /c vssadmin resize shadowstorage /for=M:\ /on=M:\ /maxsize=unbounded
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupToDisk /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\vssadmin.exe' resize shadowstorage /for=<Drive name for removable media>:\ /on=<Drive name for removable media>:\ /maxsize=unbounded
  • '<SYSTEM32>\vssadmin.exe' resize shadowstorage /for=D:\ /on=D:\ /maxsize=unbounded
  • '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
  • '<SYSTEM32>\vssadmin.exe' resize shadowstorage /for=I:\ /on=I:\ /maxsize=401MB
  • '<SYSTEM32>\cmd.exe' /c reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Backup\Client /v DisableBackupToOptical /t REG_DWORD /d 1 /f
  • '<SYSTEM32>\vssadmin.exe' resize shadowstorage /for=S:\ /on=S:\ /maxsize=401MB

Curing recommendations

  1. If the operating system (OS) can be loaded (either normally or in safe mode), download Dr.Web Security Space and run a full scan of your computer and removable media you use. More about Dr.Web Security Space.
  2. If you cannot boot the OS, change the BIOS settings to boot your system from a CD or USB drive. Download the image of the emergency system repair disk Dr.Web® LiveDisk , mount it on a USB drive or burn it to a CD/DVD. After booting up with this media, run a full scan and cure all the detected threats.
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Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.

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Download Dr.Web

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Download on App Store

After booting up, run a full scan of all disk partitions with Dr.Web Anti-virus for Linux.

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  1. If the mobile device is operating normally, download and install Dr.Web for Android. Run a full system scan and follow recommendations to neutralize the detected threats.
  2. If the mobile device has been locked by Android.Locker ransomware (the message on the screen tells you that you have broken some law or demands a set ransom amount; or you will see some other announcement that prevents you from using the handheld normally), do the following:
    • Load your smartphone or tablet in the safe mode (depending on the operating system version and specifications of the particular mobile device involved, this procedure can be performed in various ways; seek clarification from the user guide that was shipped with the device, or contact its manufacturer);
    • Once you have activated safe mode, install the Dr.Web for Android onto the infected handheld and run a full scan of the system; follow the steps recommended for neutralizing the threats that have been detected;
    • Switch off your device and turn it on as normal.

Find out more about Dr.Web for Android

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